package com.heima.wemedia.interceptor;

import com.heima.model.wemedia.pojos.WmUser;
import com.heima.wemedia.thread.WmUserThreadLocal;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;
import org.omg.PortableInterceptor.Interceptor;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Slf4j
public class MaterialInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //获取请求头
        String userId = request.getHeader("userId");

        //判空 -> 阻止
        if (StringUtils.isEmpty(userId)){
            log.warn("用户没有登录");
            return false;
        }

        //将userId写入到ThreadLocal中
        WmUser wmUser = new WmUser();
        wmUser.setId(Integer.parseInt(userId));
        WmUserThreadLocal.set(wmUser);
        return true;
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        //清除
        WmUserThreadLocal.remove();
    }
}
